I also find it interesting that the HS is speaking to everybody but it never seems to be the same message. If one makes a statement like I am right and you are wrong because I'm spiritually more in tune than that throws up a red flag to me. I don't think it's asking too much for a man's prophetic beliefs line up with what the bible actually says. If one feels the need to add things to the prophecies that aren't in line w/ the rest of them, then biblically they are treading upon dangerous ground. Fact, the bible never says there is a seven yr. "trib". Fact, the bible never divides the week into halves. Fact, the bible never says the great trib is 3 1/2 yrs. long. I believe I do know what the great trib is as the bible actually implies and it has nothing to do w/ the last part of the 70th week.
It's easy for The Holy Spirit to reveal who is speaking by It, simply because it's easy to know when someone is preaching a doctrine of men not written in God's Word, such as the false pre-trib rapture theory:
Lord Jesus speaking to His Church:
Matt 24:29-31
29 Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken:
30 And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory.
31 And He shall send His angels with a great sound of a trumpet, and they shall gather together His elect from the four winds, from one end of heaven to the other.
KJV
The false pre-trib rapture theory preaches DIRECTLY AGAINST that above Scripture by Lord Jesus. That reveals those who do that ARE NOT SPEAKING BY THE HOLY SPIRIT, but instead by another spirit.